TY - GEN
T1 - ILES, DDES and URANS Simulations of the Separated Flow Around a Circular Cylinder
T2 - Asia-Pacific International Symposium on Aerospace Technology, APISAT 2018
AU - Xu, He Yong
AU - Dong, Qing Li
AU - Qiao, Chen Liang
AU - Ye, Zheng Yin
N1 - Publisher Copyright:
© 2019, Springer Nature Singapore Pte Ltd.
PY - 2019
Y1 - 2019
N2 - Numerical simulations using ILES, DDES and URANS, respectively, have been carried out to study the wake flow of a circular cylinder at Reynolds number of 3900. The three-dimensional compressible Favre-filtered/averaged Navier-Stokes equations are solved using Roe scheme for flux difference splitting and WENO scheme for reconstruction. The Sparlart-Allmaras one-equation turbulence model is adopted for the DDES and URANS simulations. Comparative studies are carried out based on mean flow quantities, mean integral quantities and turbulence statistics. Based on comparison between the predicted results and experimental measurements, the ILES/LES, DDES using fifth-order WENO scheme with minimum dissipation are found to be adequate to predict the complex flow field. However, the URANS method is found to be not able to reproduce such complex flow. The influences of the SGS model, parameter ε and order of WENO scheme have also been investigated. It is found that the SGS model has a small impact on the LES simulation, and ILES could give results closer to the experiment than LES with a SGS model. The parameter ε and the order of WENO scheme are found to have a strong impact on the simulations. A larger parameter ε and higher order are preferable to obtain a better prediction.
AB - Numerical simulations using ILES, DDES and URANS, respectively, have been carried out to study the wake flow of a circular cylinder at Reynolds number of 3900. The three-dimensional compressible Favre-filtered/averaged Navier-Stokes equations are solved using Roe scheme for flux difference splitting and WENO scheme for reconstruction. The Sparlart-Allmaras one-equation turbulence model is adopted for the DDES and URANS simulations. Comparative studies are carried out based on mean flow quantities, mean integral quantities and turbulence statistics. Based on comparison between the predicted results and experimental measurements, the ILES/LES, DDES using fifth-order WENO scheme with minimum dissipation are found to be adequate to predict the complex flow field. However, the URANS method is found to be not able to reproduce such complex flow. The influences of the SGS model, parameter ε and order of WENO scheme have also been investigated. It is found that the SGS model has a small impact on the LES simulation, and ILES could give results closer to the experiment than LES with a SGS model. The parameter ε and the order of WENO scheme are found to have a strong impact on the simulations. A larger parameter ε and higher order are preferable to obtain a better prediction.
KW - Circular cylinder
KW - Delayed detached eddy simulation
KW - Implicit large eddy simulation
KW - Unsteady Reynolds-Averaged Navier-Stokes
KW - WENO scheme
UR - http://www.scopus.com/inward/record.url?scp=85070764113&partnerID=8YFLogxK
U2 - 10.1007/978-981-13-3305-7_60
DO - 10.1007/978-981-13-3305-7_60
M3 - 会议稿件
AN - SCOPUS:85070764113
SN - 9789811333040
T3 - Lecture Notes in Electrical Engineering
SP - 746
EP - 777
BT - The Proceedings of the Asia-Pacific International Symposium on Aerospace Technology, APISAT 2018
A2 - Zhang, Xinguo
PB - Springer Verlag
Y2 - 16 October 2018 through 18 October 2018
ER -